5) 74.925
6) 470
i think this is correct but i'm not completely sure
 
        
             
        
        
        
20, 25, 30, 30, 31, 40, 41, 49
median = 30.5
lower IQR = 27.5
upper IQR = 40.5
Range IQR = 40.5 - 27.5 = 13
answer is 13
        
             
        
        
        
Answer:
-4 and 9
Step-by-step explanation:
-4 + 9 = 5
-4 x 9 = -36
 
        
             
        
        
        
If vertex angle is 42, and the base angles are congruent, this is an isosceles triangle, they each measure: 180-42/2. They each measure 69 degrees. The length of sides don't matter.